Quelle  bcache.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM bcache

#if !defined(_TRACE_BCACHE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_BCACHE_H

#include <linux/tracepoint.h>

DECLARE_EVENT_CLASS(bcache_request,
 TP_PROTO(struct bcache_device *d, struct bio *bio),
 TP_ARGS(d, bio),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(unsigned int, orig_major  )
  __field(unsigned int, orig_minor  )
  __field(sector_t, sector   )
  __field(dev_t,  orig_sector  )
  __field(unsigned int, nr_sector  )
  __array(char,  rwbs, 6  )
 ),

 TP_fast_assign(
  __entry->dev  = bio_dev(bio);
  __entry->orig_major = d->disk->major;
  __entry->orig_minor = d->disk->first_minor;
  __entry->sector  = bio->bi_iter.bi_sector;
  __entry->orig_sector = bio->bi_iter.bi_sector - 16;
  __entry->nr_sector = bio->bi_iter.bi_size >> 9;
  blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
 ),

 TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
    MAJOR(__entry->dev), MINOR(__entry->dev),
    __entry->rwbs, (unsigned long long)__entry->sector,
    __entry->nr_sector, __entry->orig_major, __entry->orig_minor,
    (unsigned long long)__entry->orig_sector)
);

DECLARE_EVENT_CLASS(bkey,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k),

 TP_STRUCT__entry(
  __field(u32, size    )
  __field(u32, inode    )
  __field(u64, offset    )
  __field(bool, dirty    )
 ),

 TP_fast_assign(
  __entry->inode = KEY_INODE(k);
  __entry->offset = KEY_OFFSET(k);
  __entry->size = KEY_SIZE(k);
  __entry->dirty = KEY_DIRTY(k);
 ),

 TP_printk("%u:%llu len %u dirty %u", __entry->inode,
    __entry->offset, __entry->size, __entry->dirty)
);

DECLARE_EVENT_CLASS(btree_node,
 TP_PROTO(struct btree *b),
 TP_ARGS(b),

 TP_STRUCT__entry(
  __field(size_t,  bucket   )
 ),

 TP_fast_assign(
  __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
 ),

 TP_printk("bucket %zu", __entry->bucket)
);

/* request.c */

DEFINE_EVENT(bcache_request, bcache_request_start,
 TP_PROTO(struct bcache_device *d, struct bio *bio),
 TP_ARGS(d, bio)
);

DEFINE_EVENT(bcache_request, bcache_request_end,
 TP_PROTO(struct bcache_device *d, struct bio *bio),
 TP_ARGS(d, bio)
);

DECLARE_EVENT_CLASS(bcache_bio,
 TP_PROTO(struct bio *bio),
 TP_ARGS(bio),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(sector_t, sector   )
  __field(unsigned int, nr_sector  )
  __array(char,  rwbs, 6  )
 ),

 TP_fast_assign(
  __entry->dev  = bio_dev(bio);
  __entry->sector  = bio->bi_iter.bi_sector;
  __entry->nr_sector = bio->bi_iter.bi_size >> 9;
  blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
 ),

 TP_printk("%d,%d %s %llu + %u",
    MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
    (unsigned long long)__entry->sector, __entry->nr_sector)
);

DEFINE_EVENT(bcache_bio, bcache_bypass_sequential,
 TP_PROTO(struct bio *bio),
 TP_ARGS(bio)
);

DEFINE_EVENT(bcache_bio, bcache_bypass_congested,
 TP_PROTO(struct bio *bio),
 TP_ARGS(bio)
);

TRACE_EVENT(bcache_read,
 TP_PROTO(struct bio *bio, bool hit, bool bypass),
 TP_ARGS(bio, hit, bypass),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(sector_t, sector   )
  __field(unsigned int, nr_sector  )
  __array(char,  rwbs, 6  )
  __field(bool,  cache_hit  )
  __field(bool,  bypass   )
 ),

 TP_fast_assign(
  __entry->dev  = bio_dev(bio);
  __entry->sector  = bio->bi_iter.bi_sector;
  __entry->nr_sector = bio->bi_iter.bi_size >> 9;
  blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
  __entry->cache_hit = hit;
  __entry->bypass = bypass;
 ),

 TP_printk("%d,%d %s %llu + %u hit %u bypass %u",
    MAJOR(__entry->dev), MINOR(__entry->dev),
    __entry->rwbs, (unsigned long long)__entry->sector,
    __entry->nr_sector, __entry->cache_hit, __entry->bypass)
);

TRACE_EVENT(bcache_write,
 TP_PROTO(struct cache_set *c, u64 inode, struct bio *bio,
  bool writeback, bool bypass),
 TP_ARGS(c, inode, bio, writeback, bypass),

 TP_STRUCT__entry(
  __array(char,  uuid, 16  )
  __field(u64,  inode   )
  __field(sector_t, sector   )
  __field(unsigned int, nr_sector  )
  __array(char,  rwbs, 6  )
  __field(bool,  writeback  )
  __field(bool,  bypass   )
 ),

 TP_fast_assign(
  memcpy(__entry->uuid, c->set_uuid, 16);
  __entry->inode  = inode;
  __entry->sector  = bio->bi_iter.bi_sector;
  __entry->nr_sector = bio->bi_iter.bi_size >> 9;
  blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
  __entry->writeback = writeback;
  __entry->bypass = bypass;
 ),

 TP_printk("%pU inode %llu %s %llu + %u hit %u bypass %u",
    __entry->uuid, __entry->inode,
    __entry->rwbs, (unsigned long long)__entry->sector,
    __entry->nr_sector, __entry->writeback, __entry->bypass)
);

DEFINE_EVENT(bcache_bio, bcache_read_retry,
 TP_PROTO(struct bio *bio),
 TP_ARGS(bio)
);

DEFINE_EVENT(bkey, bcache_cache_insert,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

/* Journal */

DECLARE_EVENT_CLASS(cache_set,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c),

 TP_STRUCT__entry(
  __array(char,  uuid, 16 )
 ),

 TP_fast_assign(
  memcpy(__entry->uuid, c->set_uuid, 16);
 ),

 TP_printk("%pU", __entry->uuid)
);

DEFINE_EVENT(bkey, bcache_journal_replay_key,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

DEFINE_EVENT(cache_set, bcache_journal_full,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

DEFINE_EVENT(cache_set, bcache_journal_entry_full,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

TRACE_EVENT(bcache_journal_write,
 TP_PROTO(struct bio *bio, u32 keys),
 TP_ARGS(bio, keys),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(sector_t, sector   )
  __field(unsigned int, nr_sector  )
  __array(char,  rwbs, 6  )
  __field(u32,  nr_keys   )
 ),

 TP_fast_assign(
  __entry->dev  = bio_dev(bio);
  __entry->sector  = bio->bi_iter.bi_sector;
  __entry->nr_sector = bio->bi_iter.bi_size >> 9;
  __entry->nr_keys = keys;
  blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
 ),

 TP_printk("%d,%d %s %llu + %u keys %u",
    MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
    (unsigned long long)__entry->sector, __entry->nr_sector,
    __entry->nr_keys)
);

/* Btree */

DEFINE_EVENT(cache_set, bcache_btree_cache_cannibalize,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

DEFINE_EVENT(btree_node, bcache_btree_read,
 TP_PROTO(struct btree *b),
 TP_ARGS(b)
);

TRACE_EVENT(bcache_btree_write,
 TP_PROTO(struct btree *b),
 TP_ARGS(b),

 TP_STRUCT__entry(
  __field(size_t,  bucket   )
  __field(unsigned, block   )
  __field(unsigned, keys   )
 ),

 TP_fast_assign(
  __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
  __entry->block = b->written;
  __entry->keys = b->keys.set[b->keys.nsets].data->keys;
 ),

 TP_printk("bucket %zu written block %u + %u",
  __entry->bucket, __entry->block, __entry->keys)
);

DEFINE_EVENT(btree_node, bcache_btree_node_alloc,
 TP_PROTO(struct btree *b),
 TP_ARGS(b)
);

DEFINE_EVENT(cache_set, bcache_btree_node_alloc_fail,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

DEFINE_EVENT(btree_node, bcache_btree_node_free,
 TP_PROTO(struct btree *b),
 TP_ARGS(b)
);

TRACE_EVENT(bcache_btree_gc_coalesce,
 TP_PROTO(unsigned nodes),
 TP_ARGS(nodes),

 TP_STRUCT__entry(
  __field(unsigned, nodes   )
 ),

 TP_fast_assign(
  __entry->nodes = nodes;
 ),

 TP_printk("coalesced %u nodes", __entry->nodes)
);

DEFINE_EVENT(cache_set, bcache_gc_start,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

DEFINE_EVENT(cache_set, bcache_gc_end,
 TP_PROTO(struct cache_set *c),
 TP_ARGS(c)
);

DEFINE_EVENT(bkey, bcache_gc_copy,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

DEFINE_EVENT(bkey, bcache_gc_copy_collision,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

TRACE_EVENT(bcache_btree_insert_key,
 TP_PROTO(struct btree *b, struct bkey *k, unsigned op, unsigned status),
 TP_ARGS(b, k, op, status),

 TP_STRUCT__entry(
  __field(u64, btree_node   )
  __field(u32, btree_level   )
  __field(u32, inode    )
  __field(u64, offset    )
  __field(u32, size    )
  __field(u8, dirty    )
  __field(u8, op    )
  __field(u8, status    )
 ),

 TP_fast_assign(
  __entry->btree_node = PTR_BUCKET_NR(b->c, &b->key, 0);
  __entry->btree_level = b->level;
  __entry->inode = KEY_INODE(k);
  __entry->offset = KEY_OFFSET(k);
  __entry->size = KEY_SIZE(k);
  __entry->dirty = KEY_DIRTY(k);
  __entry->op = op;
  __entry->status = status;
 ),

 TP_printk("%u for %u at %llu(%u): %u:%llu len %u dirty %u",
    __entry->status, __entry->op,
    __entry->btree_node, __entry->btree_level,
    __entry->inode, __entry->offset,
    __entry->size, __entry->dirty)
);

DECLARE_EVENT_CLASS(btree_split,
 TP_PROTO(struct btree *b, unsigned keys),
 TP_ARGS(b, keys),

 TP_STRUCT__entry(
  __field(size_t,  bucket   )
  __field(unsigned, keys   )
 ),

 TP_fast_assign(
  __entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
  __entry->keys = keys;
 ),

 TP_printk("bucket %zu keys %u", __entry->bucket, __entry->keys)
);

DEFINE_EVENT(btree_split, bcache_btree_node_split,
 TP_PROTO(struct btree *b, unsigned keys),
 TP_ARGS(b, keys)
);

DEFINE_EVENT(btree_split, bcache_btree_node_compact,
 TP_PROTO(struct btree *b, unsigned keys),
 TP_ARGS(b, keys)
);

DEFINE_EVENT(btree_node, bcache_btree_set_root,
 TP_PROTO(struct btree *b),
 TP_ARGS(b)
);

TRACE_EVENT(bcache_keyscan,
 TP_PROTO(unsigned nr_found,
   unsigned start_inode, uint64_t start_offset,
   unsigned end_inode, uint64_t end_offset),
 TP_ARGS(nr_found,
  start_inode, start_offset,
  end_inode, end_offset),

 TP_STRUCT__entry(
  __field(__u32, nr_found   )
  __field(__u32, start_inode   )
  __field(__u64, start_offset   )
  __field(__u32, end_inode   )
  __field(__u64, end_offset   )
 ),

 TP_fast_assign(
  __entry->nr_found = nr_found;
  __entry->start_inode = start_inode;
  __entry->start_offset = start_offset;
  __entry->end_inode = end_inode;
  __entry->end_offset = end_offset;
 ),

 TP_printk("found %u keys from %u:%llu to %u:%llu", __entry->nr_found,
    __entry->start_inode, __entry->start_offset,
    __entry->end_inode, __entry->end_offset)
);

/* Allocator */

TRACE_EVENT(bcache_invalidate,
 TP_PROTO(struct cache *ca, size_t bucket),
 TP_ARGS(ca, bucket),

 TP_STRUCT__entry(
  __field(unsigned, sectors   )
  __field(dev_t,  dev   )
  __field(__u64,  offset   )
 ),

 TP_fast_assign(
  __entry->dev  = ca->bdev->bd_dev;
  __entry->offset  = bucket << ca->set->bucket_bits;
  __entry->sectors = GC_SECTORS_USED(&ca->buckets[bucket]);
 ),

 TP_printk("invalidated %u sectors at %d,%d sector=%llu",
    __entry->sectors, MAJOR(__entry->dev),
    MINOR(__entry->dev), __entry->offset)
);

TRACE_EVENT(bcache_alloc,
 TP_PROTO(struct cache *ca, size_t bucket),
 TP_ARGS(ca, bucket),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(__u64,  offset   )
 ),

 TP_fast_assign(
  __entry->dev  = ca->bdev->bd_dev;
  __entry->offset  = bucket << ca->set->bucket_bits;
 ),

 TP_printk("allocated %d,%d sector=%llu", MAJOR(__entry->dev),
    MINOR(__entry->dev), __entry->offset)
);

TRACE_EVENT(bcache_alloc_fail,
 TP_PROTO(struct cache *ca, unsigned reserve),
 TP_ARGS(ca, reserve),

 TP_STRUCT__entry(
  __field(dev_t,  dev   )
  __field(unsigned, free   )
  __field(unsigned, free_inc  )
  __field(unsigned, blocked   )
 ),

 TP_fast_assign(
  __entry->dev  = ca->bdev->bd_dev;
  __entry->free  = fifo_used(&ca->free[reserve]);
  __entry->free_inc = fifo_used(&ca->free_inc);
  __entry->blocked = atomic_read(&ca->set->prio_blocked);
 ),

 TP_printk("alloc fail %d,%d free %u free_inc %u blocked %u",
    MAJOR(__entry->dev), MINOR(__entry->dev), __entry->free,
    __entry->free_inc, __entry->blocked)
);

/* Background writeback */

DEFINE_EVENT(bkey, bcache_writeback,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

DEFINE_EVENT(bkey, bcache_writeback_collision,
 TP_PROTO(struct bkey *k),
 TP_ARGS(k)
);

#endif /* _TRACE_BCACHE_H */

/* This part must be outside protection */
#include <trace/define_trace.h>